package com.itheima.mapper;

import com.itheima.pojo.Emp;
import com.itheima.pojo.EmpExpr;
import com.itheima.pojo.EmpQueryParam;
import org.apache.ibatis.annotations.*;

import java.time.LocalDate;
import java.util.List;
import java.util.Map;

//员工信息
@Mapper
public interface EmpMapper {

    //-------------------------------  原始分页查询实现 -------------------
    /**
     * 查询总记录数
     */
//    @Select("select count(*) from emp e left join dept d on e.dept_id = d.id")
//    public Long count();

    /**
     * 分页查询
     */
//    @Select("select e.*,d.name deptName from emp e left join dept d on e.dept_id = d.id " +
//            "order by e.update_time desc limit #{start},#{pageSize}")
//    public List<Emp> list(Integer start,Integer pageSize);


//        @Select("select e.*,d.name deptName from emp e left join dept d on e.dept_id = d.id " +
//            "order by e.update_time desc")

//    public List<Emp> list(String name, Integer gender, LocalDate begin, LocalDate end);

    /**
     * 条件查询员工信息
     */
    public List<Emp> list(EmpQueryParam empQuertParam);

    /**
     * 新增员工数据
     */
    @Options(useGeneratedKeys = true, keyProperty = "id")
    @Insert("insert into emp(username, name, gender, phone, job, salary, image, entry_date, dept_id, create_time, update_time) " +
            "values (#{username},#{name},#{gender},#{phone},#{job},#{salary},#{image},#{entryDate},#{deptId},#{createTime},#{updateTime})")
    void insert(Emp emp);


    /**
     * 根据ID批量删除员工的基本信息
     * @param ids
     */
    void deleteByIds(List<Integer> ids);

    /**
     * 根据ID查询员工信息以及工作经历信息
     * @param id
     * @return
     */
    Emp getById(Integer id);

    /**
     * 根据ID更新员工基本信息
     * @param emp
     */
    void updateById(Emp emp);

    /**
     * 统计员工职位人数
     * @return
     */
    @MapKey("pos")
    List<Map<String,Object>> countEmpJobData();

    /**
     * 统计员工性别人数
     * @return
     */
    @MapKey("name")
    List<Map<String, Object>> countEmpGenderData();

    @Select("select  id,username,name from emp where username=#{username} and password=#{password}}")
    Emp selectByUsernameAndPassword(Emp emp);
}
